Porosity Reduction in a High Pressure Die Casting Through The Use of Squeeze Pins

The squeeze pins can be used to compensate for shrinkage defects in industrial

aluminum casting. Given that the cam caps had a large, poorly fed hot spot, and the major mechanism contributing to porosity formation in the critical region of this component was most likely solidification shrinkage, replacement of the stationary core pins with squeeze pins was recommended and a squeeze pin modification was designed.